Asset Quality and Allowances for Loan and Lease Losses and Unfunded Loan Commitments and Letters Of Credit (Home Equity and Residential Real Estate Balances) (Details) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2009
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Financing Receivable, Recorded Investment [Line Items] | |||||||||||||||||
Purchased Impaired Loans - Outstanding Balance | $ 7,521 | $ 9,723 | |||||||||||||||
Total Loans | 159,014 | [1],[2],[3],[4] | 150,595 | [1],[2],[3],[4] | 157,543 | ||||||||||||
Total Consumer Real Estate Secured Loans [Member]
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Financing Receivable, Recorded Investment [Line Items] | |||||||||||||||||
Loans Outstanding - Excluding Purchased Impaired Loans | 41,014 | [5] | 42,298 | [5] | |||||||||||||
Purchased Impaired Loans - Outstanding Balance | 6,533 | [5] | 7,924 | [5] | |||||||||||||
Government Insured or Guaranteed Loans | 2,884 | [5] | 2,488 | [5] | |||||||||||||
Purchase accounting, deferred fees and other accounting adjustments | (2,873) | (2,485) | |||||||||||||||
Total Loans | $ 47,558 | [6] | $ 50,225 | [6] | |||||||||||||
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